sh: Force pending restarted system calls to return -EINTR.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/kernel/signal_32.c

@@ -216,6 +216,9 @@ asmlinkage int sys_sigreturn(unsigned long r4, unsigned long r5,
 	sigset_t set;
 	int r0;
 
+        /* Always make any pending restarted system calls return -EINTR */
+	current_thread_info()->restart_block.fn = do_no_restart_syscall;
+
 	if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
 		goto badframe;
 
@@ -250,6 +253,9 @@ asmlinkage int sys_rt_sigreturn(unsigned long r4, unsigned long r5,
 	sigset_t set;
 	int r0;
 
+	/* Always make any pending restarted system calls return -EINTR */
+	current_thread_info()->restart_block.fn = do_no_restart_syscall;
+
 	if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
 		goto badframe;
 

arch/sh/kernel/signal_64.c

@@ -375,6 +375,9 @@ asmlinkage int sys_sigreturn(unsigned long r2, unsigned long r3,
 	sigset_t set;
 	long long ret;
 
+	/* Always make any pending restarted system calls return -EINTR */
+	current_thread_info()->restart_block.fn = do_no_restart_syscall;
+
 	if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
 		goto badframe;
 
@@ -412,6 +415,9 @@ asmlinkage int sys_rt_sigreturn(unsigned long r2, unsigned long r3,
 	stack_t __user st;
 	long long ret;
 
+	/* Always make any pending restarted system calls return -EINTR */
+	current_thread_info()->restart_block.fn = do_no_restart_syscall;
+
 	if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
 		goto badframe;